Water heater thermostat wrench



FIG. 1 is a top front perspective view of a water heater thermostatwrench showing my new design;

FIG. 2 is a right side elevation view thereof, the left side elevationview being a mirror image;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a top plan view thereof, the bottom plan view beingunornamented; and,

FIG. 5 is a rear elevation view thereof.

The ornamental design for a water heater thermostat wrench, as shown anddescribed.